Compressive deformation behavior of CrMnFeCoNi high-entropy alloy

Min Ji Jang, Soo Hyun Joo, Che Wei Tsai, Jien Wei Yeh, Hyoung Seop Kim

研究成果: Article査読

41 被引用数 (Scopus)

抄録

The compressive deformation behavior of a single phase CrMnFeCoNi high-entropy alloy (HEA) is investigated using experimental and theoretical approaches. The equiaxed microstructures are observed using optical microscope, electron backscattered diffraction, and synchrotron X-ray diffraction (XRD) techniques. Compressive results reveal that the CrMnFeCoNi HEA has a high strain-hardening exponent in spite of its large grain size due to increased dislocation density and severe lattice distortion. The compressive texture of the HEA resembles those of typical FCC metals. The phenomenological dislocation-based constitutive model well describes the compressive deformation behavior. The predicted dislocation density is in good quantitative agreement with the experimental value measured using whole-profile fitting of synchrotron XRD peaks. It can be confirmed from the experimental and theoretical findings that the deformation mechanism of the CrMnFeCoNi HEA is the conventional dislocation glide and mechanical twinning is negligible contrary to general belief.

本文言語English
ページ(範囲)982-986
ページ数5
ジャーナルMetals and Materials International
22
6
DOI
出版ステータスPublished - 2016 11 1

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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